Mobile station and base station

Abstract

A base station 100 included in a first radio communication system includes: a monitor instruction unit 130 configured to instruct a mobile station 10 to monitor a reception power of an interference signal transmitted using a frequency assigned to a second radio communication system (frequency b) when the radio communication with the mobile station 10 performed using a frequency a is interrupted; and a handoff instruction unit 140 configured to instruct the mobile station 10 to switch the frequency used in the radio communication to a frequency e not interfered with by the interference signal, in accordance with the reception power monitored by the mobile station 10.

Description

TECHNICAL FIELD[0001]The present invention relates to a mobile station capable of communicating with a first radio communication system, and to a base station included in the first radio communication system, in a communication system formed of the first radio communication system and a second radio communication system.BACKGROUND ART[0002]Multiple carriers exist at present, which provide radio communication systems employing different communication schemes (for example, cdma2000 and W-CDMA). A frequency bandwidth that can be assigned to the carriers is determined in advance, and each carrier is assigned a frequency used in the radio communication system from the limited frequency bandwidth.[0003]Such a radio communication system is a radio communication system that provides real-time communication, and thus has a wide service area to avoid interruption of the real-time communication.[0004]Since each radio communication system (a first radio communication system and a second radio c...

AI Technical Summary

Benefits of technology

The present invention provides a solution for a mobile station and base station to effectively avoid interference from a second radio communication system while reducing power consumption. The mobile station monitors the reception power of an interference signal transmitted by the second system and switches to a different frequency that is not interfered with. This reduces the power consumption of the mobile station and allows for effective avoidance of interference from the second system. The base station also monitors the reception power of the interference signal and instructs the mobile station to switch to a different frequency that is not interfered with. Overall, the invention provides a solution to effectively avoid interference and reduce power consumption in a communication system.

Problems solved by technology

However, in the conventional art mentioned above, being unable to know the timing when the interference from the second radio communication system occurs, the first mobile station has to always measure (monitor) the reception power of the signal received from the second base station in order to effectively avoid the interference from the second radio communication system.

Therefore, such an attempt to effectively avoid the interference from the second radio communication system increases the power consumption of the first mobile station.

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